Rapid identification method for macro-cell corrosion control modes of reinforcing steel bars in marine concrete

Abstract

The invention discloses a rapid identification method formacro-cell corrosion control modes of reinforcing steel bars in marinae concrete. The rapid identification method comprises the following steps of measuring a cathode reinforcing steel bar corrosion potential Emi-c before macro-cell corrosion and an anode reinforcing steel bar corrosion potential Emi-a before macro-cell corrosion in a concrete structure, and calculating a macro cell potential difference delta Ecorr1 between a cathode reinforcing steel bar and an anodereinforcing steel bar, wherein a boundary relational expression of the macro-cell corrosion control modes is Emi-c=0.5*(delta Ecorr1)-b, b is a constant, when b is 382, the boundary is a boundary for converting a cathode reinforcing steel bar control mode into a mixed control mode, and when b is 496, the boundary is a boundary for converting the mixed control mode into an anode reinforcing steel bar control mode. According to the rapid identification method, related electrochemical parameters are few, detection operation is convenient, the analysis process is simple, the control modes of macro-cell corrosion are classified and partitioned, and the macro-cell corrosion control modes of the reinforcing steel bars in concrete in all corrosion environments can be rapidly judged.

Description

technical field [0001] The invention belongs to the technical field of steel bar corrosion protection, and in particular relates to a method for quickly identifying the corrosion control mode of a steel bar macro cell in marine concrete. The method greatly simplifies the determination process of the macro cell corrosion control mode. Background technique [0002] The long life of newly-built and active marine reinforced concrete structures is the focus of attention and research in current engineering construction and operation and maintenance. Realizing and guaranteeing the long-life service of marine reinforced concrete structures mainly starts from the aspects of durability design, construction and maintenance, and controls the performance degradation of concrete materials and inhibits the corrosion of steel bars. For marine reinforced concrete structures, the durability problems caused by steel corrosion are particularly significant. The durability problem caused by stee...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the problem in the prior art that the judgment process of the steel macro cell corrosion control mode in the marine concrete structure is complicated and involves many electrochemical parameters, and provides a simple concrete A rapid identification method for the corrosion control mode of steel bar macrocells in structures

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